[CHAPTER III]—Simple Telephone Circuit—Capacity—Telephone Currents—Audible and Visible Signals
[CHAPTER IV]—Telephone Lines—Conductors—Inductance—Insulation
Substation Equipment By K. B. Miller and S. G. McMeen Page 63
[CHAPTER V]—Transmitters—Variable Resistance—Materials—Single and Multiple Electrodes—Solid-Back Transmitter—Types of Transmitters—Electrodes—Packing—Acousticon Transmitter—Switchboard Transmitter
[CHAPTER VI]—Receivers—Types of Receivers—Operator's Receiver
[CHAPTER VII]—Primary Cells—Series and Multiple Connections—Types of Primary Cells
[CHAPTER VIII]—Magneto Signaling Apparatus—Battery Bell—Magneto Bell—Magneto Generator—Armature—Automatic Shunt—Polarized Ringer
[CHAPTER IX]—Hook Switch
[CHAPTER X]—Electromagnets—Impedance, Induction, and Repeating Coils
[CHAPTER XI]—Non-Inductive Resistance Devices—Differentially-Wound Unit